package com.colin.base.background;

/**
 * Created by Colin on 2020/3/14 15:40
 * email: colinzhaodong@gmail.com
 * desc: 死锁
 *
 * @author zhaod
 */
public class DeadLock implements Runnable{
	int flag = 1;
	static Object o1 = new Object();
	static Object o2 = new Object();

	public static void main(String[] args) {
		DeadLock r1 = new DeadLock();
		DeadLock r2 = new DeadLock();
		r1.flag = 1;
		r2.flag = 0;
		new Thread(r1).start();
		new Thread(r2).start();
	}

	@Override
	public void run() {
		System.out.println("flag = " + flag);
		if (flag == 1) {
			synchronized (o1) {
				try {
					Thread.sleep(500);
				} catch (InterruptedException e) {
					e.printStackTrace();
				}
				synchronized (o2) {
					System.out.println("1");
				}
			}
		}
		if (flag == 0) {
			synchronized (o2) {
				try {
					Thread.sleep(500);
				} catch (InterruptedException e) {
					e.printStackTrace();
				}
				synchronized (o1) {
					System.out.println("0");
				}
			}
		}
	}
}
